CN219245682U

CN219245682U - Aviation plug terminal tester matched with ring main unit

Info

Publication number: CN219245682U
Application number: CN202223501032.9U
Authority: CN
Inventors: 杨卫斌
Original assignee: Beijing Haochuang Ruitong Electrical Equipment Co ltd
Current assignee: Beijing Haochuang Ruitong Electrical Equipment Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-23
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses an aviation plug terminal tester matched with a ring main unit, which comprises a core board single chip microcomputer module, a test signal output interface expansion circuit, a feedback signal input interface expansion circuit, a welding short circuit state display circuit, a tested piece terminal interface, a tested piece lead interface and a welding broken line state display circuit, wherein the core board single chip microcomputer module is connected with the test signal output interface expansion circuit; the core board singlechip module is respectively connected with the test signal output interface expansion circuit and the feedback signal input interface expansion circuit. The utility model detects quality defects such as continuous welding, cold welding or wire number errors of pins by testing welded terminals by using the design purpose of the wiring terminal testing tool; the semi-automatic testing tool can be used for realizing semi-automatic testing on the terminal of the terminal, can improve the testing efficiency, reduce the reject ratio of products and reduce the production cost.

Description

Aviation plug terminal tester matched with ring main unit

Technical Field

The utility model relates to the technical field of ring main unit testing, in particular to an aviation plug terminal tester matched with a ring main unit.

Background

The intelligent power distribution network is an important means for improving the power supply reliability of the urban power distribution network, and is a necessary trend of the modern development of the power system. In recent years, the construction of the national intelligent power distribution network shows a rapid development trend, the demonstration project of the intelligent power distribution network has large scale and long period, the intelligent power distribution network in a city is often changed for 1-2 years, the number of related departments, equipment, materials and factories far exceeds the number of the prior network distribution projects, the workload is increased in multiple, the project planning difficulty is high, and the intelligent power distribution network has incomparable scale and complexity of other conventional project projects.

The ring main unit is an important component of a power distribution system, and all or sampling detection is needed to ensure reliable operation of equipment and improve power supply reliability. Because of the lack of special equipment, scattered detection instruments are used for current detection, and the automation level is low through manual item-by-item testing; the test efficiency is low, and a large number of detection requirements of the ring main unit cannot be met; the labor intensity of the testers is high, the professional requirements of the testers are high, the testers are prone to making mistakes, and the objectivity of the test results is sometimes difficult to ensure.

At present, no available testing equipment or instrument exists in the industry and the market, and two people are matched with point-to-point testing by manpower, so that the efficiency is low, the error is large, the cost is high, the operation is complicated, the instability is high, the error rate is high, the reaction speed is low and the like.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the aviation plug terminal tester matched with the ring main unit, which has the advantages of convenient and quick connection, visual and clear display and complete function and simple operation, and further the traditional testing process can only rely on manual detection and has the problem of difficult step redundancy.

(II) technical scheme

In order to realize the advantages of convenient and quick connection, visual and clear display, comprehensive functions and simple operation, the utility model adopts the following specific technical scheme:

the utility model provides a looped netowrk case matched with aerial plug terminal tester, includes core board singlechip module, test signal output interface extension circuit, feedback signal input interface extension circuit, welding short circuit state display circuit, measured piece terminal interface, measured piece lead wire interface and welding broken wire state display circuit;

the core board singlechip module is respectively connected with the test signal output interface expansion circuit and the feedback signal input interface expansion circuit, and the test signal output interface expansion circuit is sequentially connected with the welding short-circuit state display circuit, the tested piece terminal interface, the tested piece lead interface and the welding disconnection state display circuit, and the welding short-circuit state display circuit is connected with the test signal output interface expansion circuit.

Further, the core board single-chip microcomputer module comprises a single-chip microcomputer core board circuit, a power supply module circuit and a key control circuit.

Further, the singlechip core board circuit comprises a chip STM32F103, a resistor R132 and a light emitting diode D70, the power supply module comprises a power supply interface P1, a main power supply module HLK1, a secondary power supply module HLK2, a capacitor C5 and a capacitor C6, and the key control circuit comprises a resistor R131, a reset key K1 and a test key K2;

The VB pin and the 3.3 pin of the chip STM32F103 are kept connected with a direct current power supply, the 5V pin of the chip STM32F103 is kept connected with the +5V pin of the main power supply module HLK1 and one end of the capacitor C5, the R pin of the chip STM32F103 outputs RST signals and is kept connected with one end of the reset key K1, the A9 pin of the chip STM32F103 outputs KSCS signals and is kept connected with one end of the test key K2 and one end of the resistor R131, the A15 pin of the chip STM32F103 outputs ZTXS signals and is kept connected with one end of the resistor R132, the other end of the resistor R132 is kept connected with the cathode of the light emitting diode D70, the other end of the reset key K1 is kept connected with the other end of the test key K2 and is grounded, the main power supply module HLK1 is kept connected with the power interface P1 in series, and the auxiliary power supply module HLK2 is kept connected with the main power supply module HLK1 in parallel.

Further, the test signal output interface expansion circuit comprises a parallel port expansion chip U1, a parallel port expansion chip U2, a parallel port expansion chip U3, a parallel port expansion chip U4, a capacitor C1 and a capacitor C2;

the OE pin of the parallel port expansion chip U1 is kept connected with the B1 pin of the chip STM32F103, the OE pin of the parallel port expansion chip U2 is kept connected with the B0 pin of the chip STM32F103, the OE pin of the parallel port expansion chip U3 is kept connected with the B7 pin of the chip STM32F103, the OE pin of the parallel port expansion chip U4 is kept connected with the A10 pin of the chip STM32F103, one end of the capacitor C1 is kept connected with the DIR pin and the VCC pin of the parallel port expansion chip U1, the other end of the capacitor C1 is grounded, one end of the capacitor C2 is kept connected with the DIR pin and the VCC pin of the parallel port expansion chip U3, and the other end of the capacitor C2 is grounded.

Further, the feedback signal input interface expansion circuit comprises a parallel port expansion chip U5, a parallel port expansion chip U6, a parallel port expansion chip U7, a parallel port expansion chip U8, a capacitor C3 and a capacitor C4;

the OE pin of the parallel port expansion chip U5 is kept connected with the A8 pin of the chip STM32F103, the OE pin of the parallel port expansion chip U6 is kept connected with the B5 pin of the chip STM32F103, the OE pin of the parallel port expansion chip U7 is kept connected with the A12 pin of the chip STM32F103, the OE pin of the parallel port expansion chip U8 is kept connected with the A11 pin of the chip STM32F103, one end of the capacitor C3 is kept connected with the VCC pin of the parallel port expansion chip U5, the other end of the capacitor C1 is grounded, one end of the capacitor C4 is kept connected with the VCC pin of the parallel port expansion chip U6, and the other end of the capacitor C1 is grounded.

Further, the welding short-circuit state display circuit comprises a resistor R9, a resistor R13, a light emitting diode D1 and a feedback isolation optocoupler G2;

one end of the resistor R9 is grounded, the other end of the resistor R9 is connected with the E pole of the receiving end of the feedback isolation optocoupler G2, the negative pole of the transmitting end of the feedback isolation optocoupler G2 is connected with one end of the resistor R13, the other end of the resistor R13 is connected with the positive pole of the light-emitting diode D1, and the negative pole of the light-emitting diode D1 is grounded.

Further, the tested piece terminal interface comprises an output isolation optocoupler G1 and a resistor R5;

the receiving end E pole of the output isolation optocoupler G1 is connected with the positive pole of the transmitting end of the feedback isolation optocoupler G2, and the positive pole of the transmitting end of the output isolation optocoupler G1 is connected with one end of the resistor R5.

Further, the method comprises the steps of, the welding wire breakage state display circuit comprises a pipe wire port P4, a pipe wire port P5, a resistor RX1, a resistor RX2, a resistor RX3, a resistor RX4, a resistor RX5, a resistor RX6, a resistor RX7, a resistor RX8, a resistor RX9, a resistor RX10, a resistor RX11, a resistor RX12, a resistor RX13, a resistor RX14, a resistor RX15, a resistor RX16, a resistor RX17, a resistor RX18, a resistor RX19, a resistor RX20, a resistor RX21, a resistor RX22, a resistor RX23, a resistor RX24, a resistor RX25, a resistor RX26, a resistor RX27, a resistor RX28, a resistor RX29, a resistor RX30, a resistor RX31, a resistor RX32, a light emitting diode DX1, a light emitting diode DX2, a light emitting diode DX3, a light emitting diode DX4 light emitting diode DX5, light emitting diode DX6, light emitting diode DX7, light emitting diode DX8, light emitting diode DX9, light emitting diode DX10, light emitting diode DX11, light emitting diode DX12, light emitting diode DX13, light emitting diode DX14, light emitting diode DX15, light emitting diode DX16, light emitting diode DX17, light emitting diode DX18, light emitting diode DX19, light emitting diode DX20, light emitting diode DX21, light emitting diode DX22, light emitting diode DX23, light emitting diode DX24, light emitting diode DX25, light emitting diode DX26, light emitting diode DX27, light emitting diode DX28, light emitting diode DX29, light emitting diode DX30, light emitting diode DX31, and light emitting diode DX32;

Wherein, the pin port P4 is sequentially connected with the positive electrode of the light emitting diode DX1, the positive electrode of the light emitting diode DX2, the positive electrode of the light emitting diode DX3, the positive electrode of the light emitting diode DX4, the positive electrode of the light emitting diode DX5, the positive electrode of the light emitting diode DX6, the positive electrode of the light emitting diode DX7, the positive electrode of the light emitting diode DX8, the positive electrode of the light emitting diode DX9, the positive electrode of the light emitting diode DX10, the positive electrode of the light emitting diode DX11, the positive electrode of the light emitting diode DX12, the positive electrode of the light emitting diode DX13, the positive electrode of the light emitting diode DX14, the positive electrode of the light emitting diode DX15 and the positive electrode of the light emitting diode DX16 from the 16, the negative electrode of the light emitting diode DX1 is connected with one end of the resistor RX1, the negative electrode of the other end of the resistor RX2 is grounded, the negative electrode of the light emitting diode DX3 is connected with one end of the resistor RX3, the other end of the resistor RX4 is grounded, the other end of the resistor RX4 is grounded, the cathode of the light emitting diode DX5 is connected with one end of the resistor RX5, the other end of the resistor RX5 is grounded, the cathode of the light emitting diode DX6 is connected with one end of the resistor RX6, the other end of the resistor RX6 is grounded, the cathode of the light emitting diode DX7 is connected with one end of the resistor RX7, the other end of the resistor RX7 is grounded, the cathode of the light emitting diode DX8 is connected with one end of the resistor RX8, the other end of the resistor RX8 is grounded, the cathode of the light emitting diode DX9 is connected with one end of the resistor RX9, the cathode of the light emitting diode DX10 is connected with one end of the resistor RX10, the other end of the resistor RX10 is grounded, the cathode of the light emitting diode DX11 is connected with one end of the resistor RX11, the other end of the resistor RX11 is grounded, the cathode of the light emitting diode DX12 is connected with one end of the resistor RX13, the other end of the resistor RX13 is grounded, the cathode of the light emitting diode DX14 is connected with one end of the resistor RX14, the other end of the resistor RX14 is grounded, the cathode of the light emitting diode DX15 is connected with one end of the resistor RX15, the other end of the resistor RX15 is grounded, the cathode of the light emitting diode DX16 is connected with one end of the resistor RX16, and the other end of the resistor RX16 is grounded;

The pin P5 is sequentially connected with the positive electrode of the light emitting diode DX17, the positive electrode of the light emitting diode DX18, the positive electrode of the light emitting diode DX19, the positive electrode of the light emitting diode DX20, the positive electrode of the light emitting diode DX21, the positive electrode of the light emitting diode DX22, the positive electrode of the light emitting diode DX23, the positive electrode of the light emitting diode DX24, the positive electrode of the light emitting diode DX25, the positive electrode of the light emitting diode DX26, the positive electrode of the light emitting diode DX27, the positive electrode of the light emitting diode DX28, the positive electrode of the light emitting diode DX29, the positive electrode of the light emitting diode DX30, the positive electrode of the light emitting diode DX31 and the positive electrode of the light emitting diode DX32 from the 16 to the 1, the negative electrode of the light emitting diode DX17 is connected with one end of the resistor RX17, the negative electrode of the other end of the light emitting diode DX18 is connected with one end of the resistor RX18, the negative electrode of the light emitting diode DX19 is grounded, the negative electrode of the light emitting diode DX19 is connected with one end of the resistor RX19, the other end of the resistor RX20 is grounded, the cathode of the light emitting diode DX21 is connected with one end of the resistor RX21, the other end of the resistor RX21 is grounded, the cathode of the light emitting diode DX22 is connected with one end of the resistor RX22, the other end of the resistor RX22 is grounded, the cathode of the light emitting diode DX23 is connected with one end of the resistor RX23, the other end of the resistor RX23 is grounded, the cathode of the light emitting diode DX24 is connected with one end of the resistor RX24, the other end of the resistor RX24 is grounded, the cathode of the light emitting diode DX25 is connected with one end of the resistor RX25, the cathode of the light emitting diode DX26 is connected with one end of the resistor RX26, the other end of the resistor RX26 is grounded, the cathode of the light emitting diode DX27 is connected with one end of the resistor RX27, the other end of the resistor RX27 is grounded, the cathode of the light emitting diode DX28 is connected with one end of the resistor RX29, the other end of the resistor RX29 is grounded, the cathode of the light emitting diode DX30 is connected with one end of the resistor RX30, the other end of the resistor RX30 is grounded, the cathode of the light emitting diode DX31 is connected with one end of the resistor RX31, the other end of the resistor RX31 is grounded, the cathode of the light emitting diode DX32 is connected with one end of the resistor RX32, and the other end of the resistor RX32 is grounded.

(III) beneficial effects

Compared with the prior art, the utility model provides the aviation plug terminal tester matched with the ring main unit, which has the following beneficial effects:

(1) The design purpose of the wiring terminal testing tool is to test the welded terminals, so that quality defects such as continuous welding, cold welding or wire number errors of pins are detected; the semi-automatic testing tool can be used for realizing semi-automatic testing on the terminal of the terminal, can improve the testing efficiency, reduce the reject ratio of products and reduce the production cost.

(2) By taking an STM32 singlechip as a core, corresponding automatic test control is realized; designing a test button to realize convenient test control; designing an LED to realize visual display of the test state; and the design of the isolated voltage-stabilized power supply ensures the safety and reliability of operation.

(3) The utility model has standard terminal interface, which is convenient for the connection of the tested terminal; the test device has clear test state and test result display function; the test button is provided to realize test control.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic block diagram of an aerial plug terminal tester for ring main unit mating according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a power supply module of a core board singlechip module in a ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 3 is a schematic diagram of a key control circuit of a core board singlechip module in a ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a single chip microcomputer core board circuit of a core board single chip microcomputer module in a ring main unit matched with an aerial plug terminal tester according to an embodiment of the utility model;

FIG. 5 is a schematic diagram of an extended circuit of a test signal output interface in a ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 6 is a schematic diagram of an expansion circuit of a feedback signal input interface in a ring main unit mating use aviation plug terminal tester according to an embodiment of the utility model;

FIG. 7 is a schematic diagram of a welding short circuit state display circuit in an aviation plug terminal tester for ring main unit mating in accordance with an embodiment of the present utility model;

FIG. 8 is one of the remaining interface schematic diagrams of the welding short-circuit status display circuit in the ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 9 is a second schematic diagram of the remaining interfaces of the welding short-circuit status display circuit in the ring main unit mating aviation plug terminal tester according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a tested piece terminal interface in a ring main unit mating use aerial plug terminal tester according to an embodiment of the present utility model;

FIG. 11 is one of the remaining circuit schematic diagrams of the tested piece terminal interface in the ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 12 is a second schematic circuit diagram of the remaining circuit of the tested piece terminal interface in the ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 13 is a third schematic circuit diagram of the remaining circuit of the tested piece terminal interface in the ring main unit mating aviation plug terminal tester according to an embodiment of the utility model;

FIG. 14 is a schematic diagram of a pin interface of a tested part in an air-plug terminal tester for ring main unit mating according to an embodiment of the utility model;

FIG. 15 is a schematic diagram of a part under test in an air plug terminal tester for ring main unit mating according to an embodiment of the present utility model;

fig. 16 is a schematic diagram of a circuit for displaying a welding disconnection state in an aviation plug terminal tester for ring main unit matching according to an embodiment of the present utility model.

In the figure:

1. a core board singlechip module; 2. a test signal output interface expansion circuit; 3. the feedback signal is input into the interface expansion circuit; 4. a welding short-circuit state display circuit; 5. a tested piece terminal interface; 6. a measured piece; 7. a tested piece lead interface; 8. and a welding disconnection state display circuit.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to the embodiment of the utility model, an aerial plug terminal tester matched with a ring main unit is provided.

Referring to the drawings and the specific embodiments, as shown in fig. 1-16, the aviation plug terminal tester for matching with the ring main unit according to the embodiment of the utility model comprises a core board single chip microcomputer module 1, a test signal output interface expansion circuit 2, a feedback signal input interface expansion circuit 3, a welding short-circuit state display circuit 4, a tested piece terminal interface 5, a tested piece 6, a tested piece lead interface 7 and a welding disconnection state display circuit 8;

the core board singlechip module 1 is respectively connected with the test signal output interface expansion circuit 2 and the feedback signal input interface expansion circuit 3, the test signal output interface expansion circuit 2 is sequentially connected with the welding short-circuit state display circuit 4, the tested piece terminal interface 5, the tested piece 6, the tested piece lead interface 7 and the welding disconnection state display circuit 8, and the welding short-circuit state display circuit 4 is connected with the test signal output interface expansion circuit 2.

In one embodiment, as shown in fig. 2-4, the core board single-chip microcomputer module 1 comprises a single-chip microcomputer core board circuit, a power supply module circuit and a key control circuit.

The utility model adopts 220V alternating current power supply to supply power, the circuit board needs 220/5V isolated direct current power supply, and in order to ensure the safe and reliable operation, the terminal part needs another 5V power supply isolated from the main power supply, and the utility model can be realized by adopting another 220/5V isolated power supply.

In one embodiment, as shown in fig. 2-4, the core board circuit of the single chip microcomputer comprises a chip STM32F103, a resistor R132 and a light emitting diode D70, the power module comprises a power interface P1, a main power module HLK1, a secondary power module HLK2, a capacitor C5 and a capacitor C6, and the key control circuit comprises a resistor R131, a reset key K1 and a test key K2;

As shown in fig. 2, the right side P1 is a power supply inlet, and is connected with 220V mains supply; HLK1 converts 220V alternating current into 5V direct current for the singlechip part of the circuit board and peripheral circuits to use; +5v and GND are power and ground of the core logic circuit portion of the main control board. HLK2 is the power module of terminal pin, for test terminal pin provides 5V direct current voltage, this part keeps apart with the power part of core board, guarantees operation safety to prevent core board singlechip part from receiving the interference, improve the job stabilization nature of system, +5V1 and GND1 are to the 5V power and the ground of outer test circuit part.

As shown in fig. 3, the key part circuit is used for receiving an operation control command, and in order to simplify the operation, the device is provided with two keys, namely a test key and a reset key; in order to be convenient to operate on the test fixture, an external button interface is designed on the circuit board besides the test buttons.

The test button is connected to a KSCS (A9) pin of the singlechip, and the test tool starts a test process by pressing the button; the reset key is connected to the reset pin of the singlechip, and if the condition of short circuit among households is detected in the test, the tool can run under the terminal welding error state display interface, and the reset key is pressed to display the clearing, so that the next test flow can be restarted.

In order to facilitate the control of the test process by the testers, the lower P_CS interface and the lower P_FW interface can be used for connecting an external test button, and the test button is arranged on a box body of the test tool to realize corresponding control.

As shown in fig. 4, the single-chip microcomputer adopts a GD32F103C8T6 single-chip microcomputer core board, the core board is powered by a 5V power supply and is provided with 40 external pins, so that signal input and control are realized; the functional definition of each pin is shown in fig. 4, and the core board of the singlechip shares 8 opening interfaces, 4 opening control interfaces, 1 state display interface and one reset interface. The state display interface controls the D70 light emitting diode to flash through the output state, so that the display of the working state is realized.

In one embodiment, as shown in fig. 5, the test signal output interface extension circuit 2 includes a parallel port extension chip U1, a parallel port extension chip U2, a parallel port extension chip U3, a parallel port extension chip U4, a capacitor C1, and a capacitor C2;

In one embodiment, as shown in fig. 6, the feedback signal input interface extension circuit 3 includes a parallel port extension chip U5, a parallel port extension chip U6, a parallel port extension chip U7, a parallel port extension chip U8, a capacitor C3, and a capacitor C4;

As shown in fig. 5-6, the test fixture needs to test 32 terminals, namely, 32 output ports and 32 input ports, and the number of the ports of the core board cannot be satisfied, so that the expansion of the I/O ports is realized on the core board of the test fixture through a 74HC245 chip, and the 74HC245 is a common parallel port expansion chip and can work in an output or input mode; u1, U2, U3 and U4 in FIG. 5 work in an output mode, KC 1-KC 8 are connected to pins of a singlechip, when KCKZ1 pins output low level, U1 output is enabled, control states of KC 1-KC 8 are transmitted to O1-O8, and signal output of the first 8 paths is realized; similarly, the signal output control of the KCKZ2 to O9 to O16 is performed, the KCKZ3 to O17 to O24 is performed, and the KCKZ4 to O25 to O32 is performed.

In the case that U5-U8 in FIG. 6 works in an input state, when the KKZ 1 pin is in a low level, input signals of I1-I8 are transmitted to the KR 1-KR 8 pin, and the input signals of I1-I8 can be read by the singlechip; similarly, KKZ 2 controls the input reading of I9-I16, KKKZ 3 controls the reading of I17-I24 input signals, and KKZ 4 controls the reading of I25-I32 signals.

In one embodiment, as shown in fig. 7, the welding short-circuit status display circuit 4 includes a resistor R9, a resistor R13, a light emitting diode D1, and a feedback isolation optocoupler G2;

In one embodiment, as shown in fig. 10, the tested piece terminal interface 5 includes an output isolation optocoupler G1 and a resistor R5;

As shown in fig. 7-9 and fig. 10-13, the terminal test part is an external interface, and in order to ensure the safety of the single chip microcomputer and the operation, an optical coupler isolation is required to be arranged; the individual terminal test part circuits are identical.

In fig. 10, G1 is an output isolation terminal, the left side O1 is a control signal output by the single chip microcomputer, and when O1 outputs a low level, the optocoupler G1 is turned on, and DZ1 outputs a voltage of 5V; and G2 is a terminal voltage feedback isolation optocoupler, when DZ1 has a high level signal, G2 is conducted, a corresponding light emitting diode D1 is lightened, meanwhile, G2 is conducted, the output end I1 of the G2 optocoupler becomes high level, and a singlechip can judge whether DZ1 is electrified or not by reading the pin voltage.

The other 31 circuits have the same parameters as the first circuit.

As shown in fig. 14, the tested piece is connected to P4 and P5 of the test tool by a lead, and whether the tested piece terminal interface side is disconnected is connected to the signal output interface of the tool is displayed by an LED or the like, so that the short circuit test is accepted.

As shown in fig. 15, the circuit board can measure the interface of 32 terminals at most, so that a terminal with 32 interfaces needs to be arranged on the circuit board, voltage signals need to be output to the terminals, and the voltages on the terminals need to be read; if a voltage is output to one terminal, and voltage signals are read from other terminals when the voltage of each terminal is read, the condition that the terminals are connected with each other is described; in FIG. 15, DZ 1-DZ 32 are respectively connected to tested interface terminal blocks, when the terminal blocks are connected with tested terminals, the tested terminals can be tested, and test voltages are respectively applied to the terminals in the test process, and feedback voltages on all the terminals are obtained through feedback loops; when a test voltage is applied to one of the terminals, if the test voltage is read from the other terminals, it is indicated that there is a solder connection between the terminals.

In one embodiment, as shown in fig. 16, the solder-broken state display circuit 8 includes a pin port P4, a pin port P5, a resistor RX1, a resistor RX2, a resistor RX3, a resistor RX4, a resistor RX5, a resistor RX6, a resistor RX7, a resistor RX8, a resistor RX9, a resistor RX10, a resistor RX11, a resistor RX12, a resistor RX13, a resistor RX14, a resistor RX15, a resistor RX16, a resistor RX17, a resistor RX18, a resistor RX19, a resistor RX20, a resistor RX21, a resistor RX22, a resistor RX23, a resistor RX24, a resistor RX25, a resistor RX26, a resistor RX27, a resistor RX28, a resistor RX29, a resistor RX30, a resistor RX31, a resistor RX32, a light emitting diode DX1, a light emitting diode DX2, a light emitting diode DX3, a light emitting diode DX4 light emitting diode DX5, light emitting diode DX6, light emitting diode DX7, light emitting diode DX8, light emitting diode DX9, light emitting diode DX10, light emitting diode DX11, light emitting diode DX12, light emitting diode DX13, light emitting diode DX14, light emitting diode DX15, light emitting diode DX16, light emitting diode DX17, light emitting diode DX18, light emitting diode DX19, light emitting diode DX20, light emitting diode DX21, light emitting diode DX22, light emitting diode DX23, light emitting diode DX24, light emitting diode DX25, light emitting diode DX26, light emitting diode DX27, light emitting diode DX28, light emitting diode DX29, light emitting diode DX30, light emitting diode DX31, and light emitting diode DX32;

Connecting the wiring of the terminals with corresponding wire number sequence indicator lamps according to the wire number sequence, and sequentially obtaining voltage by each terminal and each corresponding terminal wiring in the test; under normal conditions, the line number sequence indicator lights flash sequentially during the test; if no virtual welding or broken line condition exists, when test voltage is applied to the terminal, the corresponding line number sequence lamp is lighted, otherwise, the lamp is not lighted; if the line number is wrong, the flashing sequence of the line number sequence indicator lamp is wrong, so that a tester can find out whether the line number is wrong or not by observing the indication condition of the line number sequence.

In the welding broken line state display circuit 8, the P4 and P5 ports are used for connecting the pipe leg wires of the tested wiring terminal, and are connected to the terminal wires with corresponding wire numbers through the connection interfaces, when the pins are electrified, corresponding indicator lamps are lightened, and in the test, if the indicator lamps are not lightened or the lightening sequence is wrong, the wire breakage or the wire number error is indicated.

In summary, by means of the above technical solution of the present utility model, the design purpose of the terminal testing tool is to test the soldered terminals, and detect quality defects such as pin connection, cold solder joint or wire number error; the semi-automatic testing tool can be used for realizing semi-automatic testing on the terminal of the terminal, can improve the testing efficiency, reduce the reject ratio of products and reduce the production cost. By taking an STM32 singlechip as a core, corresponding automatic test control is realized; designing a test button to realize convenient test control; designing an LED to realize visual display of the test state; and the design of the isolated voltage-stabilized power supply ensures the safety and reliability of operation. The utility model has standard terminal interface, which is convenient for the connection of the tested terminal; the test device has clear test state and test result display function; the test button is provided to realize test control.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The aviation plug terminal tester matched with the ring main unit is characterized by comprising a core board single chip microcomputer module (1), a test signal output interface expansion circuit (2), a feedback signal input interface expansion circuit (3), a welding short-circuit state display circuit (4), a tested piece terminal interface (5), a tested piece (6), a tested piece lead interface (7) and a welding disconnection state display circuit (8);

The core board single chip microcomputer module (1) is respectively connected with the test signal output interface expansion circuit (2) and the feedback signal input interface expansion circuit (3), the test signal output interface expansion circuit (2) is sequentially connected with the welding short circuit state display circuit (4), the tested piece terminal interface (5), the tested piece (6), the tested piece lead interface (7) and the welding disconnection state display circuit (8) in a maintaining mode, and the welding short circuit state display circuit (4) is connected with the test signal output interface expansion circuit (2).

2. The aviation plug terminal tester matched with the ring main unit according to claim 1, wherein the core board single-chip microcomputer module (1) comprises a single-chip microcomputer core board circuit, a power supply module circuit and a key control circuit.

3. The device as claimed in claim 2, wherein the single chip microcomputer core board circuit comprises a chip STM32F103, a resistor R132 and a light emitting diode D70, the power module comprises a power interface P1, a main power module HLK1, a secondary power module HLK2, a capacitor C5 and a capacitor C6, and the key control circuit comprises a resistor R131, a reset key K1 and a test key K2;

The VB pin and the 3.3 pin of the chip STM32F103 are kept connected with a direct current power supply, the 5V pin of the chip STM32F103 is kept connected with the +5V pin of the main power supply module HLK1 and one end of the capacitor C5, the R pin of the chip STM32F103 outputs a RST signal and is kept connected with one end of the reset key K1, the A9 pin of the chip STM32F103 outputs a KSCS signal and is kept connected with one end of the test key K2 and one end of the resistor R131, the A15 pin of the chip STM32F103 outputs a ZT signal and is kept connected with one end of the resistor R132, the other end of the resistor R132 is kept connected with the cathode of the light emitting diode D70, the other end of the reset key K1 is kept connected with the other end of the test key K2 and is grounded, the main power supply module HLK1 is kept connected with the power interface P1 in series, and the auxiliary power supply module HLK2 is kept connected with the main power supply module HLK1 in parallel.

4. The aviation plug terminal tester for the ring main unit according to claim 3, wherein the test signal output interface expansion circuit (2) comprises a parallel port expansion chip U1, a parallel port expansion chip U2, a parallel port expansion chip U3, a parallel port expansion chip U4, a capacitor C1 and a capacitor C2;

5. The aviation plug terminal tester for the ring main unit according to claim 4, wherein the feedback signal input interface expansion circuit (3) comprises a parallel port expansion chip U5, a parallel port expansion chip U6, a parallel port expansion chip U7, a parallel port expansion chip U8, a capacitor C3 and a capacitor C4;

6. The device for testing an aerial plug terminal for a ring main unit according to claim 5, wherein the welding short-circuit state display circuit (4) comprises a resistor R9, a resistor R13, a light emitting diode D1 and a feedback isolation optocoupler G2;

one end of the resistor R9 is grounded, the other end of the resistor R9 is connected with the E pole of the receiving end of the feedback isolation optocoupler G2, the negative pole of the transmitting end of the feedback isolation optocoupler G2 is connected with one end of the resistor R13, the other end of the resistor R13 is connected with the positive pole of the light emitting diode D1, and the negative pole of the light emitting diode D1 is grounded.

7. The aviation plug terminal tester for the ring main unit according to claim 6, wherein the tested piece terminal interface (5) comprises an output isolation optocoupler G1 and a resistor R5;

8. The device of claim 7, wherein the device comprises a housing, a plurality of terminals, the welding disconnection state display circuit (8) comprises a pipeline port P4, a pin port P5, a resistor RX1, a resistor RX2, a resistor RX3, a resistor RX4, a resistor RX5, a resistor RX6, a resistor RX7, a resistor RX8, a resistor RX9, a resistor RX10, a resistor RX11, a resistor RX12, a resistor RX13, a resistor RX14, a resistor RX15, a resistor RX16, a resistor RX17, a resistor RX18, a resistor RX19, a resistor RX20, a resistor RX21, a resistor RX22, a resistor RX23, a resistor RX24, a resistor RX25, a resistor RX26, a resistor RX27, a resistor RX28, a resistor RX29, a resistor RX30, a resistor RX31, a resistor RX32, a light emitting diode DX1, a light emitting diode DX2, a light emitting diode DX3, a light emitting diode DX4 light emitting diode DX5, light emitting diode DX6, light emitting diode DX7, light emitting diode DX8, light emitting diode DX9, light emitting diode DX10, light emitting diode DX11, light emitting diode DX12, light emitting diode DX13, light emitting diode DX14, light emitting diode DX15, light emitting diode DX16, light emitting diode DX17, light emitting diode DX18, light emitting diode DX19, light emitting diode DX20, light emitting diode DX21, light emitting diode DX22, light emitting diode DX23, light emitting diode DX24, light emitting diode DX25, light emitting diode DX26, light emitting diode DX27, light emitting diode DX28, light emitting diode DX29, light emitting diode DX30, light emitting diode DX31, and light emitting diode DX32;

Wherein the pin P4 is connected with the positive electrode of the light emitting diode DX1, the positive electrode of the light emitting diode DX2, the positive electrode of the light emitting diode DX3, the positive electrode of the light emitting diode DX4, the positive electrode of the light emitting diode DX5, the positive electrode of the light emitting diode DX6, the positive electrode of the light emitting diode DX7, the positive electrode of the light emitting diode DX8, the positive electrode of the light emitting diode DX9, the positive electrode of the light emitting diode DX10, the positive electrode of the light emitting diode DX11, the positive electrode of the light emitting diode DX12, the positive electrode of the light emitting diode DX13, the positive electrode of the light emitting diode DX14, the positive electrode of the light emitting diode DX15, the positive electrode of the light emitting diode DX16 in sequence from the 16 th pin to the 1 st pin, the negative electrode of the light emitting diode DX8, the positive electrode of the light emitting diode DX9, the positive electrode of the light emitting diode DX10, the positive electrode of the light emitting diode DX11, the positive electrode of the light emitting diode DX14, the negative electrode of the light emitting diode 1 and the resistor RX2 are connected to one end, the other end of the resistor RX2 is grounded, the cathode of the light emitting diode DX3 is connected with one end of the resistor RX3, the other end of the resistor RX3 is grounded, the cathode of the light emitting diode DX4 is connected with one end of the resistor RX4, the other end of the resistor RX4 is grounded, the cathode of the light emitting diode DX5 is connected with one end of the resistor RX5, the other end of the resistor RX5 is grounded, the cathode of the light emitting diode DX6 is connected with one end of the resistor RX6, the other end of the resistor RX6 is grounded, the cathode of the light emitting diode DX7 is connected with one end of the resistor RX7, the other end of the resistor RX7 is grounded, the cathode of the light emitting diode DX8 is connected with one end of the resistor RX8, the other end of the resistor RX8 is grounded, the cathode of the light emitting diode DX9 is connected with one end of the resistor RX9, the other end of the resistor RX9 is grounded, the cathode of the light emitting diode 10 is connected with one end of the resistor RX10, the other end of the resistor RX10 is grounded, the cathode of the light emitting diode DX11 is connected with one end of the resistor RX11, the other end of the resistor RX11 is grounded, the cathode of the light emitting diode DX12 is connected with one end of the resistor RX12, the other end of the resistor RX12 is grounded, the cathode of the light emitting diode DX13 is connected with one end of the resistor RX13, the other end of the resistor RX13 is grounded, the cathode of the light emitting diode DX14 is connected with one end of the resistor RX14, the other end of the resistor RX14 is grounded, the cathode of the light emitting diode DX15 is connected with one end of the resistor RX15, the other end of the resistor RX15 is grounded, the cathode of the light emitting diode DX16 is connected with one end of the resistor RX16, and the other end of the resistor RX16 is grounded;

The pin port P5 is sequentially connected with the positive electrode of the light emitting diode DX17, the positive electrode of the light emitting diode DX18, the positive electrode of the light emitting diode DX19, the positive electrode of the light emitting diode DX20, the positive electrode of the light emitting diode DX21, the positive electrode of the light emitting diode DX22, the positive electrode of the light emitting diode DX23, the positive electrode of the light emitting diode DX24, the positive electrode of the light emitting diode DX25, the positive electrode of the light emitting diode DX26, the positive electrode of the light emitting diode DX27, the positive electrode of the light emitting diode DX28, the positive electrode of the light emitting diode DX29, the positive electrode of the light emitting diode DX30, the positive electrode of the light emitting diode DX31 and the positive electrode of the light emitting diode DX32 from the 16 to the 1 from the 16 th pin, the negative electrode of the light emitting diode DX24, one end of the resistor RX17 is connected with the negative electrode of the resistor RX17, the other end of the resistor RX end is grounded, the negative electrode of the light emitting diode DX18 is connected with one end of the resistor RX18, the other end of the resistor RX18 is grounded, the cathode of the light emitting diode DX19 is connected with one end of the resistor RX19, the other end of the resistor RX19 is grounded, the cathode of the light emitting diode DX20 is connected with one end of the resistor RX20, the other end of the resistor RX20 is grounded, the cathode of the light emitting diode DX21 is connected with one end of the resistor RX21, the other end of the resistor RX21 is grounded, the cathode of the light emitting diode DX22 is connected with one end of the resistor RX22, the other end of the resistor RX22 is grounded, the cathode of the light emitting diode DX23 is connected with one end of the resistor RX23, the other end of the resistor RX23 is grounded, the cathode of the light emitting diode DX24 is connected with one end of the resistor RX24, the other end of the resistor RX24 is grounded, the cathode of the light emitting diode DX25 is connected with one end of the resistor RX25, the other end of the resistor RX26 is grounded, the LED DX27 cathode is connected with one end of the resistor RX27, the other end of the resistor RX27 is grounded, the LED DX28 cathode is connected with one end of the resistor RX28, the other end of the resistor RX28 is grounded, the LED DX29 cathode is connected with one end of the resistor RX29, the other end of the resistor RX29 is grounded, the LED DX30 cathode is connected with one end of the resistor RX30, the other end of the resistor RX30 is grounded, the LED DX31 cathode is connected with one end of the resistor RX31, the other end of the resistor RX31 is grounded, the LED DX32 cathode is connected with one end of the resistor RX32, and the other end of the resistor RX32 is grounded.